import { reqCartList, reqDeleteCartById, reqUpdateCheckedById } from "@/api";

const state = {
  cartList:[]
};
const mutations = {
  GETCARTLIST(state,cartList){
    state.cartList = cartList;
  }
};
const actions = {
  //获取购物车列表数据
  async getCartList({ commit }){
    let result = await reqCartList();
    //测试是否能获取个人购物车数据
    console.log(result);
    if(result.code == 200){
      commit("GETCARTLIST",result.data)
    }
  },
  //删除购物车某一个产品
  async deleteCartListBySkuId({commit}, skuId){
    let result = await reqDeleteCartById(skuId);
    if( result.code == 200 ){
      return 'ok'
    }
    else{
      return Promise.reject(new Error('faile'));
    }
  },
  //修改购物车某一个产品的选中状态
  async updateCheckedById({commit},{skuId,isChecked}) {
    let result = await reqUpdateCheckedById(skuId,isChecked);
    if(result.code == 200){
      return 'ok'
    }
    else{
      return Promise.reject(new Error('faile'))
    }
  },
  //删除全部勾选的产品
  deleteAllCheckedCart({dispatch,getters}){
    //context:小仓库, commit【提交mutations修改state】 getters 【计算属性】 dispatch【派发action】 state 【当前仓库数据】
    //获取购物车中全部的产品(是一个数组)
    let PromiseAll = [];
    getters.cartList.cartInfoList.forEach(item => {
      let promise =  item.isChecked == 1 ? dispatch('deleteCartListBySkuId',item.skuId) : '';
      //将每一次返回的promise添加到数组中
      PromiseAll.push(promise);
    });
    //只要全部的p1|p2....都成功，返回结果即为成功
    //如果有一个失败，返回结果即为失败
    return Promise.all(PromiseAll);
  },
  //修改全部产品的状态
  updateAllCartIsChecked({dispatch,state},isChecked){
    //数组
    let promiseAll = [];
    state.cartList[0].cartInfoList.forEach((item) => {
      let promise = dispatch("updateCheckedById",{ skuId: item.skuId, isChecked });
      promiseAll.push(promise);
    });
    //最后返回结果
    return Promise.all(promiseAll)
  }
};
const getters = {
  cartList(state){
    return state.cartList[0] || {}
  }
};

export default{
  state,
  mutations,
  actions,
  getters,
}